<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <form action="01hello.html" method="get">
        用户名 <input type="text" name="username" /> <br>
        密码 <input type="password" name="password" /> <br>
        <input type="submit" />
        <input type="reset" />
    </form>

    <form action="01hello.html" method="get">
        用户名 <input type="text" name="username" /> <br>
        密码 <input type="password" name="password" /> <br> 
        选择头像：
        <input type="file" name="file" /> <br>
        <input type="submit" value="登录" />
        <input type="reset"  value="清空"/>
    </form>
</body>

</html>